Radiator.



J. M. FEDDERS RADIATOR.

APPLICATION FILED SEPT.2. I915.

Patented Apr; 23, 19118.

2 SHEETS-SHE ATTEJRN EYE.

INVENTEJR dwflgM I EYMrQM 1. M. fEDDERS.

RADIATOR.

APPLICATION FILED SEPT. 2.1916. Patented Apr. 23, 1913 2 SHEETS-SHEET 2.

INVENTUR aaw h .Y r@/% ATTURN YE are snares ranwr on on.

JOHN M. FEDDERS, OF BUFFALO, NEW YORK, ASSIG-NOB T0 FEDDERSMANUFACTURING COMPANY, INC., OF BUFFALO, NEW YORK, A CORPORATION OF NEWYORK.

anoint-con.

Specification of Letters Patent.

Patented Apr. 23, 1918.

Application filed September 2, 1916. Serial No. 118,246.

To all whom it may concern."

Be it known that I, JOHN M; Fnuonns, a citizen of the United States,residing at Bufialo, in the county of Erie and State of New York, haveinvented new and useful Improvements in ltadiators, of which thefollowing is a specification.

This invention relates to a radiator which is more particularly designedfor use on motor trucks which are operated by explosion engines but thesame is also applicable to other uses.

The objects of this invention are to provide a radiator for this purposewhich is comparatively simple and durable in construction and eflicient'in operation, which can be produced at low cost, which is not liable toget out of order when subjected to severe usage and which furnishes themaxi mum eficiency for the amount of metal incorporated in the same.

In the accompanying drawings:

Figure l is a front elevation, partly in section, of a radiatorembodying my improvements. Fig. 2 is a horizontal section of the sametaken on line 22, Fig. i. Fig. 3 is a vertical longitudinal sectiontaken on line 33, Fig 1. 'Figs. 4 and 5 are detached perspective viewsof the two sections of a water tube of the radiator. Fig. 8 is 'afragmentary vertical section showing a modification of the means fordetachably connecting the body and perforated'head of one or" the waterboxes.

Similar characters of reference indicate corresponding parts throughoutthe several from which the cooled water is returned to the coolingoncirculating system of the ex plosior. engine.

Arranged between these two water boxes are a plurality of upright watertubes or conduits 3 preferably of sheet metal which communicate at theiropposite ends with these water boxes so that the water is conducted fromthe inlet box 1 to the outlet box 2 and is thus cooled or lowered intempera ture while being transferred from one water box to the otherowing to the radiation of the heat of the water to the external airwhich is in contact with the outer surface of said tubes.

The upper water box preferably comprises an upper body 4 which isprovided at its lower edge with a marginal flange 5, and 7 a'lower head6 which is detachably connected at its margin with the flange of thecompanion body. Leakage between the lower head and the flange of theupper body is prevented by interposing a gasket or packing 7 between themargins of these parts, as shown in Figs. 1 and 3.

The lower water box or header comprises a lower body 8 having its upperedge provided with an external flange 9, and a head cning the structureas a whole. lln their preferred form these means comprise a plurality oftie rods 12 each of which has its opposite ends provided with externalscrew threads and arranged in corresponding openings in the heads andbody flanges of both water boxes, inner screw nuts 13 arranged on eachof said tie rods and engaging with said heads, and outer screw nuts llarranged on.

each of said tie rods and engaging with the body flanges of the waterboxes.

If desired, however, the head and body flanges of each water'box may beconnected with each other independently of the other water box in whichcase this connection may go eilected by short bolts 12", as shown-inEach of the tubes arranged between the water boxes preferably comprisestwo like sections each of which has a semi-cylindrical body composed ofa plurality of short semi cylindrical tube or body portions 15 which arearranged end to end in a longitudinal row, two longitudinal flangesarranged on opposite sides oil each tabs see its till

tion and each flange composed of a plurality of: short portions 16 whichare arranged end to end on the same side of the tube but are connectedat their inner longitudinal edges with the'longitudinal edges of thecompanion semi-cylindrical tube portions and a, plurality of radiatingfins or wings arranged in a longitudinal row on. the outer side of arespective tube section. Each of these radieting fins or wings isarranged crosswise of the respective tube section and preferably formedintegrally therewith by folding or doubling the sheet metal from whichthe tube sections are made at intervals so as to form a succession ofplaits which alternate with the rows ottube portions and flangeportions, Each of these plaits has two plies 1'3 17 the outer edges ofwhich are connected with each other while their inneredges are connectedwith the opposing transverse edges of the adjacent tube and flangeportions of one of the tube sections.

lChe central part of each radiating tin or wing has itsouter edge curvedconcentrically or substantially so relatively to the axis of the tube inits completed form, as shown at 18 and the opposite end portions 19 ofeach wing or fin have their outer edges arranged parallel orsubstantially so with the adjacent flange portions of the tube, or inother words, parallel to a line drawn diametrically through the axis ofthe tube.

Two tube sections of this character are placed with. the concave sidesof their body portions facing each other and their flange portions inengagement and. then the latter are preferably connected by soldering tocomplete the tube and avoid leakage de sired the connection. between theflange por tions of two tube sections may be otherwise ehfectedn Theheads 6, 10 of both water bones are provided with a plurality ofcorresponding openings which receive opposite ends of the water tubes,each of these openings being: constructed. to iorrn'a central circularpen tion 20 and straight or slotted portions 21, 21 arranged ondiametrically opposi e of the central circular portionso as to respondin shape to the cross section oi two tube portions and the adjacentflanges oi? a water tube which is designed to bit into this opening oi?a water boa head.

. The jOl'flLtS between the water tubes and boa are preterably roadswater in the several rows is such that they aaeaeer tight by solderalthough this may be accomplished in any other suitable inannen in themanufacture of radiators these water tubes are preferably arranged inrows crosswise of the radiator; the number of rows depending upon thedesired capacity of the radiaton When a plurality of rows of tubes areemployed. the disposition of the tubes are staggered in a direction foreand aft of the radiator, whereby each tube. in one transtil verse rowwill be arranged lengthwise in line with the space between two tubes inan adjacent row, thereby causing the air when passing from the frontside to the rear side of the radiator to take a tortuous course instead.of an unobstructed path thus increasing the eliiciency of the radiator,

The tube sections of this radiator can be produced expeditiously andeconomicall by simple operations and the assembly of t e same with thewater boxes can also be efi'ected uickly so that the radiator as a wholecan no produced at low cost Furthermore the construction of the radiatoris such that the same is strong and durable and not liable to leak orget out of orderwhen' subjected to undue strains, and it any repairs onthe same are necessary it is'possible to conveniently dismember and.reassemble the various parts of the radiator for this purpose with outinvolving undue expense I claim as my invention:

A. tube for radiators comprising two sections each of which. has alongitudinal row of semi-cylindrical body portions, longitw dinal flangeportions arranged at opposite edges of each body portion, and radiatingfins or wings arranged on the outer sides of said body portions andflange portions,

each fin being constructed in the "form of a dlllllil EEDERSQ

